Toy.



WILLIAM F. HARTMAN, OF EAS'ION, PENNSYLVANIA.

TOY.

Specification of Letters Patent.

Application filed April 8, 1915. Serial No. 19,961.

and useful Toy; and I do hereby declare the following to be a full,clear, and exact description of the inventlon, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to the art of games and toys, and particularly toan improved toy comprising two balls, one considerably smaller than theother, the larger ball being provided with a spirally arranged groove,the ends of which terminate at diametrically opposite poles of the ball,and the object of this improved toy consists in rolling the smaller ballin said groove about the larger ball, from one terminal of the groove tothe other, without allowing the smaller ball to become displaced. Toaccomplish this feat, half of the groove of the larger ball has itsbottom on one side, so that when starting the smaller ball at the upperterminal of the groove, the smaller ball will roll gradually in itsgroove for half its length, and the other half of the groove has itsbottom upon the opposite side, so that when reversing the larger ball,the smaller ball will roll in the groove for its other half, and inrolling this other half, the smaller ball travels up-grade, to reach theopposite terminal of the groove. It is to be noted that in rolling thesmaller ball about the larger ball, the smaller ball travels downwardlyfor one-half of the length of the groove, and in traveling the otherhalf the smaller ball moves upgrade.

In practical fields the details of construction may necessitatealterations, falling within the scope of what is claimed.

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings :'--Figure 1 is a view in perspective, of the largerball showing the smaller ball starting to roll from the terminal of thegroove and downwardly thereof. Fig. 2 is a perspective view of thelarger ball showing the smaller ball having traveled one-half the lengthof the groove of the larger ball, Fig. 3 is a perspective view of thelarger ball showing the same being twisted so that the smaller ballwillpass transversely from the bottom of half of the groove to the bottom ofthe opposite half thereof, so that the smaller ball may travel in theother half on an upgrade to the opposite terminal. Fig. 4: is aperspective view showing the smaller ball on its way toward theoppositeterminal. Fig. 5 is a sectional view, which is out transversely of thegroove of the ball.

Referring more especially to the drawings, 1 designates the larger ballhaving a spirally arranged groove 2, the opposite ends of whichterminate at diametrically opposite poles of the ball, as shown at 3 and4. This groove for half its length has its bottom 6 upon one side,whereas the other half of the groove has its bottom 7 upon the oppositeside, and where these two bottoms terminate (which is substantiallymidway of the end terminals of the groove), a transversely disposedgutter or groove 8 is provided, so that the smaller ball after havingrolled downwardly in the groove from the terminal 3 for half the lengthof the groove, the smaller ball may be transferred from one bottom tothe opposite bottom, so as to roll upwardly in the other half of thegroove to the opposite terminal et, the smaller ball is designated bythe numeral 10. In rolling the smaller ball about the larger, thesmaller ball is placed at the terminal 3, then the larger ball isgradually located, allowing the smaller ball to gradually move down thegroove, and when it reaches a distance one-half of the length of thegroove, the larger ball is carefully inverted, thereby transferring thesmaller ball from the bottom of onehalf the groove to the bottom of theopposite half, after which it is the object to roll the smaller ballthrough the other half of the groove to the opposite terminal 4, andvice versa.

The invention having been set forth, what is claimed as new and usefulis 1. In combination, a larger and a smaller ball, the larger ballhaving a spiral groove having terminals at diametrically opposite polesof the ball, said groove extending from one terminal to the other inwhich groove the smaller ball is adapted to roll.

2. In combination, a larger and a smaller ball, the larger ball having aspiral groove having terminals at diametrically opposite poles of theball, said groove extending from one terminal to the other in whichgroove the smaller ball is adapted to roll, said groove Patented Aug.17, 1915.

for half its length having its bottom on one 9 side of said groove, theother half of its name to this specification in the presence of lengthhaving its bottom on the opposlte side, two subscribing witnesses. and atransverse gutter formed in the groove substantially midway of the twoterminals WILLIAM HARTMAN' 5 of the groove, thereby connecting saidoppo- Witnesses:

VERNON MILLER,

site bottoms.

In testimony whereof I have signed my W. FRED. HARTMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, D. G.

